
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="zh">
  <head>
    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>19.9. quopri --- Encode and decode MIME quoted-printable data &#8212; Python 3.6.6rc1 文档</title>
    <link rel="stylesheet" href="../_static/pydoctheme.css" type="text/css" />
    <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
    <script type="text/javascript" src="../_static/documentation_options.js"></script>
    <script type="text/javascript" src="../_static/jquery.js"></script>
    <script type="text/javascript" src="../_static/underscore.js"></script>
    <script type="text/javascript" src="../_static/doctools.js"></script>
    <script type="text/javascript" src="../_static/sidebar.js"></script>
    <link rel="search" type="application/opensearchdescription+xml"
          title="在 Python 3.6.6rc1 文档 中搜索"
          href="../_static/opensearch.xml"/>
    <link rel="author" title="关于这些文档" href="../about.html" />
    <link rel="index" title="索引" href="../genindex.html" />
    <link rel="search" title="搜索" href="../search.html" />
    <link rel="copyright" title="Copyright" href="../copyright.html" />
    <link rel="next" title="19.10. uu --- Encode and decode uuencode files" href="uu.html" />
    <link rel="prev" title="19.8. binascii --- Convert between binary and ASCII" href="binascii.html" />
    <link rel="shortcut icon" type="image/png" href="../_static/py.png" />
    <link rel="canonical" href="https://docs.python.org/3/library/quopri.html" />
    
    <script type="text/javascript" src="../_static/copybutton.js"></script>
    <script type="text/javascript" src="../_static/switchers.js"></script>
    
    
 

  </head><body>  
    <div class="related" role="navigation" aria-label="related navigation">
      <h3>导航</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             accesskey="I">索引</a></li>
        <li class="right" >
          <a href="../py-modindex.html" title="Python 模块索引"
             >模块</a> |</li>
        <li class="right" >
          <a href="uu.html" title="19.10. uu --- Encode and decode uuencode files"
             accesskey="N">下一页</a> |</li>
        <li class="right" >
          <a href="binascii.html" title="19.8. binascii --- Convert between binary and ASCII"
             accesskey="P">上一页</a> |</li>
        <li><img src="../_static/py.png" alt=""
                 style="vertical-align: middle; margin-top: -1px"/></li>
        <li><a href="https://www.python.org/">Python</a> &#187;</li>
        <li>
          <span class="language_switcher_placeholder">zh</span>
          <span class="version_switcher_placeholder">3.6.6rc1</span>
          <a href="../index.html">Documentation </a> &#187;
        </li>

          <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> &#187;</li>
          <li class="nav-item nav-item-2"><a href="netdata.html" accesskey="U">19. Internet Data Handling</a> &#187;</li>
    <li class="right">
        

    <div class="inline-search" style="display: none" role="search">
        <form class="inline-search" action="../search.html" method="get">
          <input placeholder="Quick search" type="text" name="q" />
          <input type="submit" value="Go" />
          <input type="hidden" name="check_keywords" value="yes" />
          <input type="hidden" name="area" value="default" />
        </form>
    </div>
    <script type="text/javascript">$('.inline-search').show(0);</script>
         |
    </li>

      </ul>
    </div>    

    <div class="document">
      <div class="documentwrapper">
        <div class="bodywrapper">
          <div class="body" role="main">
            
  <div class="section" id="module-quopri">
<span id="quopri-encode-and-decode-mime-quoted-printable-data"></span><h1>19.9. <a class="reference internal" href="#module-quopri" title="quopri: Encode and decode files using the MIME quoted-printable encoding."><code class="xref py py-mod docutils literal notranslate"><span class="pre">quopri</span></code></a> --- Encode and decode MIME quoted-printable data<a class="headerlink" href="#module-quopri" title="永久链接至标题">¶</a></h1>
<p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.6/Lib/quopri.py">Lib/quopri.py</a></p>
<hr class="docutils" id="index-0" />
<p>This module performs quoted-printable transport encoding and decoding, as
defined in <span class="target" id="index-1"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc1521.html"><strong>RFC 1521</strong></a>: &quot;MIME (Multipurpose Internet Mail Extensions) Part One:
Mechanisms for Specifying and Describing the Format of Internet Message Bodies&quot;.
The quoted-printable encoding is designed for data where there are relatively
few nonprintable characters; the base64 encoding scheme available via the
<a class="reference internal" href="base64.html#module-base64" title="base64: RFC 3548: Base16, Base32, Base64 Data Encodings; Base85 and Ascii85"><code class="xref py py-mod docutils literal notranslate"><span class="pre">base64</span></code></a> module is more compact if there are many such characters, as when
sending a graphics file.</p>
<dl class="function">
<dt id="quopri.decode">
<code class="descclassname">quopri.</code><code class="descname">decode</code><span class="sig-paren">(</span><em>input</em>, <em>output</em>, <em>header=False</em><span class="sig-paren">)</span><a class="headerlink" href="#quopri.decode" title="永久链接至目标">¶</a></dt>
<dd><p>Decode the contents of the <em>input</em> file and write the resulting decoded binary
data to the <em>output</em> file. <em>input</em> and <em>output</em> must be <a class="reference internal" href="../glossary.html#term-file-object"><span class="xref std std-term">binary file objects</span></a>.  If the optional argument <em>header</em> is present and true, underscore
will be decoded as space. This is used to decode &quot;Q&quot;-encoded headers as
described in <span class="target" id="index-2"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc1522.html"><strong>RFC 1522</strong></a>: &quot;MIME (Multipurpose Internet Mail Extensions)
Part Two: Message Header Extensions for Non-ASCII Text&quot;.</p>
</dd></dl>

<dl class="function">
<dt id="quopri.encode">
<code class="descclassname">quopri.</code><code class="descname">encode</code><span class="sig-paren">(</span><em>input</em>, <em>output</em>, <em>quotetabs</em>, <em>header=False</em><span class="sig-paren">)</span><a class="headerlink" href="#quopri.encode" title="永久链接至目标">¶</a></dt>
<dd><p>Encode the contents of the <em>input</em> file and write the resulting quoted-printable
data to the <em>output</em> file. <em>input</em> and <em>output</em> must be
<a class="reference internal" href="../glossary.html#term-file-object"><span class="xref std std-term">binary file objects</span></a>. <em>quotetabs</em>, a
non-optional flag which controls whether to encode embedded spaces
and tabs; when true it encodes such embedded whitespace, and when
false it leaves them unencoded.
Note that spaces and tabs appearing at the end of lines are always encoded,
as per <span class="target" id="index-3"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc1521.html"><strong>RFC 1521</strong></a>.  <em>header</em> is a flag which controls if spaces are encoded
as underscores as per <span class="target" id="index-4"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc1522.html"><strong>RFC 1522</strong></a>.</p>
</dd></dl>

<dl class="function">
<dt id="quopri.decodestring">
<code class="descclassname">quopri.</code><code class="descname">decodestring</code><span class="sig-paren">(</span><em>s</em>, <em>header=False</em><span class="sig-paren">)</span><a class="headerlink" href="#quopri.decodestring" title="永久链接至目标">¶</a></dt>
<dd><p>Like <a class="reference internal" href="#quopri.decode" title="quopri.decode"><code class="xref py py-func docutils literal notranslate"><span class="pre">decode()</span></code></a>, except that it accepts a source <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> and
returns the corresponding decoded <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>.</p>
</dd></dl>

<dl class="function">
<dt id="quopri.encodestring">
<code class="descclassname">quopri.</code><code class="descname">encodestring</code><span class="sig-paren">(</span><em>s</em>, <em>quotetabs=False</em>, <em>header=False</em><span class="sig-paren">)</span><a class="headerlink" href="#quopri.encodestring" title="永久链接至目标">¶</a></dt>
<dd><p>Like <a class="reference internal" href="#quopri.encode" title="quopri.encode"><code class="xref py py-func docutils literal notranslate"><span class="pre">encode()</span></code></a>, except that it accepts a source <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a> and
returns the corresponding encoded <a class="reference internal" href="stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>. By default, it sends a
<code class="docutils literal notranslate"><span class="pre">False</span></code> value to <em>quotetabs</em> parameter of the <a class="reference internal" href="#quopri.encode" title="quopri.encode"><code class="xref py py-func docutils literal notranslate"><span class="pre">encode()</span></code></a> function.</p>
</dd></dl>

<div class="admonition seealso">
<p class="first admonition-title">参见</p>
<dl class="last docutils">
<dt>Module <a class="reference internal" href="base64.html#module-base64" title="base64: RFC 3548: Base16, Base32, Base64 Data Encodings; Base85 and Ascii85"><code class="xref py py-mod docutils literal notranslate"><span class="pre">base64</span></code></a></dt>
<dd>Encode and decode MIME base64 data</dd>
</dl>
</div>
</div>


          </div>
        </div>
      </div>
      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
        <div class="sphinxsidebarwrapper">
  <h4>上一个主题</h4>
  <p class="topless"><a href="binascii.html"
                        title="上一章">19.8. <code class="docutils literal notranslate"><span class="pre">binascii</span></code> --- Convert between binary and ASCII</a></p>
  <h4>下一个主题</h4>
  <p class="topless"><a href="uu.html"
                        title="下一章">19.10. <code class="docutils literal notranslate"><span class="pre">uu</span></code> --- Encode and decode uuencode files</a></p>
  <div role="note" aria-label="source link">
    <h3>This Page</h3>
    <ul class="this-page-menu">
      <li><a href="../bugs.html">Report a Bug</a></li>
      <li>
        <a href="https://github.com/python/cpython/blob/3.6/Doc/library/quopri.rst"
            rel="nofollow">Show Source
        </a>
      </li>
    </ul>
  </div>
        </div>
      </div>
      <div class="clearer"></div>
    </div>  
    <div class="related" role="navigation" aria-label="related navigation">
      <h3>导航</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             >索引</a></li>
        <li class="right" >
          <a href="../py-modindex.html" title="Python 模块索引"
             >模块</a> |</li>
        <li class="right" >
          <a href="uu.html" title="19.10. uu --- Encode and decode uuencode files"
             >下一页</a> |</li>
        <li class="right" >
          <a href="binascii.html" title="19.8. binascii --- Convert between binary and ASCII"
             >上一页</a> |</li>
        <li><img src="../_static/py.png" alt=""
                 style="vertical-align: middle; margin-top: -1px"/></li>
        <li><a href="https://www.python.org/">Python</a> &#187;</li>
        <li>
          <span class="language_switcher_placeholder">zh</span>
          <span class="version_switcher_placeholder">3.6.6rc1</span>
          <a href="../index.html">Documentation </a> &#187;
        </li>

          <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> &#187;</li>
          <li class="nav-item nav-item-2"><a href="netdata.html" >19. Internet Data Handling</a> &#187;</li>
    <li class="right">
        

    <div class="inline-search" style="display: none" role="search">
        <form class="inline-search" action="../search.html" method="get">
          <input placeholder="Quick search" type="text" name="q" />
          <input type="submit" value="Go" />
          <input type="hidden" name="check_keywords" value="yes" />
          <input type="hidden" name="area" value="default" />
        </form>
    </div>
    <script type="text/javascript">$('.inline-search').show(0);</script>
         |
    </li>

      </ul>
    </div>  
    <div class="footer">
    &copy; <a href="../copyright.html">Copyright</a> 2001-2018, Python Software Foundation.
    <br />
    The Python Software Foundation is a non-profit corporation.
    <a href="https://www.python.org/psf/donations/">Please donate.</a>
    <br />
    Last updated on 6月 24, 2018.
    <a href="../bugs.html">Found a bug</a>?
    <br />
    Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.7.2.
    </div>

  </body>
</html>